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Finding the Fourth Proportional to 72,285.88, 108,428.94 and 47,482.60

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Solution

The fourth proportional to 72,285.88, 108,428.94 and 47,482.60 is: 71,223.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,285.88 : 108,428.94 = 47,482.60 : x
  2. Step 2: Convert to fraction form
    72,285.88/108,428.94 = 47,482.60/x
  3. Step 3: Cross multiply
    72,285.88x = 108,428.94 × 47,482.60
  4. Step 4: Simplify right side
    72,285.88x = 5,148,487,986.44
  5. Step 5: Solve for x
    x = 5,148,487,986.44/72,285.88
  6. Step 6: Final answer
    x = 71,223.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.